/*
* File: fig1-3_list.c (Page 4)
 *    列出一个目录中所有文件(名)
 */
#include "apue.h"
#include <dirent.h>

int main(int argc, char *argv[]) {
    DIR *dp;
    struct dirent *dirp;

    if  (argc != 2) {
        err_quit("a single argument (the directory name) is required");
    }
    if ((dp = opendir(argv[1])) == NULL) {
        err_sys("can't open %s", argv[1]);
    }
    while ((dirp = readdir(dp)) != NULL) {
        printf("%s\n", dirp->d_name);
    }
    closedir(dp);
    exit(0);
}